A biodiversity offset estimate can tell you what to allow for in a budget. It takes a separate market check to establish whether suitable credits can be secured by the date your project needs them.
That distinction matters for infrastructure, renewable energy and development projects in NSW. A change to an access road, construction compound or transmission route can change the biodiversity impacts, the credits a project may need and the time available to secure them. The best time to test those assumptions is while the design can still change.
Why credit availability matters in NSW
In July 2026, IPART’s review of the NSW biodiversity credits market highlighted difficulties sourcing like-for-like credits for some obligations held by the Biodiversity Conservation Fund. It also identified gaps in the quality and reliability of market information. For project teams, the practical takeaway is to check the likely credit match, the status of supply and the timing before relying on an offset allowance. Read IPART’s market findings.
These conditions make an early offset strategy essential. Proponents cannot assume that suitable credits will become available as their project approaches construction. Establishing new Biodiversity Stewardship Agreements involves upfront expenditure, complex assessment and approval processes, and tax consequences that can weaken the commercial incentive for landholders to participate. These barriers can delay or prevent new supply. Furthermore, NSW Government agencies’ overlapping regulatory and market roles add further uncertainty, with IPART identifying risks to competition and participant confidence. Management costs also matter: the Total Fund Deposit must fund the site’s future management obligations, so higher costs owing to inflation and the decreasing purchasing power of the AUD is increasing the amount credit sales need to recover. For proponents, the practical response is to identify credits required early, test the feasibility and timing of proposed supply, and use that evidence to inform design, credit procurement and contingency planning.
Understand potential design options and offset liability
Imagine a proposed solar farm with two possible access routes. The shorter route crosses native vegetation with hollow-bearing trees. The longer route follows an existing farm track and could avoid some of that impact, although it may cost more to build.
The decision depends on more than the civil works estimate. Compare each route’s construction cost, land access, likely biodiversity impacts and the cost and timing of addressing any residual impacts. If the lower-impact route reduces exposure to credits that are difficult to source, the extra construction cost may be justified.
Five questions to ask of your offset strategy
- What can the design avoid or minimise? Check whether access, staging or infrastructure placement can reduce the impacts that would remain.
- Which credits might be required? Record the likely credit types, quantities and matching requirements, along with the assessment assumptions behind them.
- What supply is available now? Distinguish issued credits from pending or potential supply, then confirm current availability with the seller.
- What supports the budget? Test indicative pricing through market sounding, identify when credits could be secured and record which costs could change as the design or assessment progresses.
- When does the obligation need to be met? Work back from the relevant approval milestone and planned construction commencement. Stage or revisit the strategy if supply, pricing or design changes.
What landholders should check before pursuing stewardship
A Biodiversity Stewardship Agreement can create credits and support long-term conservation management. For a landholder, a site’s feasibility depends on what land and native vegetation the agreement would include and what it would take to establish and manage the site.
Start by assessing the property’s ecological values, likely credit types and evidence of demand. Then consider assessment costs, ongoing management and how the agreement would interact with farming, succession or a future sale. Read the NSW Government’s guidance on Biodiversity Stewardship Agreements
